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ADS8344NBG4 Arkusz danych(PDF) 3 Page - Texas Instruments |
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ADS8344NBG4 Arkusz danych(HTML) 3 Page - Texas Instruments |
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3 / 25 page  ADS8344 3 SBAS139E ELECTRICAL CHARACTERISTICS: +5V At TA = –40°C to +85°C, +VCC = +5V, VREF = +5V, fSAMPLE = 100kHz, and fCLK = 24 • fSAMPLE = 2.4MHz, unless otherwise noted. ADS8344E, N ADS8344EB, NB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS RESOLUTION 16 ✻ BITS ANALOG INPUT Full-Scale Input Span Positive Input - Negative Input 0 VREF ✻✻ V Absolute Input Range Positive Input –0.2 +VCC + 0.2 ✻✻ V Negative Input –0.2 +1.25 ✻✻ V Capacitance 25 ✻ pF Leakage Current ±1 ✻ µA SYSTEM PERFORMANCE No Missing Codes 14 15 Bits Integral Linearity Error 86 LSB Offset Error ±2 ±1mV Offset Error Match 1.2 4 ✻✻ LSB(1) Gain Error ±0.05 ±0.024 % Gain Error Match 1.0 4 ✻✻ LSB Noise 20 ✻ µVrms Power-Supply Rejection +4.75V < VCC < 5.25V 3 ✻ LSB(1) SAMPLING DYNAMICS Conversion Time 16 ✻ CLK Cycles Acquisition Time 4.5 ✻ CLK Cycles Throughput Rate 100 ✻ kHz Multiplexer Settling Time 500 ✻ ns Aperture Delay 30 ✻ ns Aperture Jitter 100 ✻ ps Internal Clock Frequency SHDN = VDD 2.4 ✻ MHz External Clock Frequency 0.024 2.4 ✻✻ MHz Data Transfer Only 0 2.4 ✻✻ MHz DYNAMIC CHARACTERISTICS Total Harmonic Distortion(2) VIN = 5Vp-p at 10kHz –90 ✻ dB Signal-to-(Noise + Distortion) VIN = 5Vp-p at 10kHz 86 ✻ dB Spurious–Free Dynamic Range VIN = 5Vp-p at 10kHz 92 ✻ dB Channel-to-Channel Isolation VIN = 5Vp-p at 10kHz 100 ✻ dB REFERENCE INPUT Range 0.5 +VCC ✻✻ V Resistance DCLK Static 5 ✻ G Ω Input Current 40 100 ✻✻ µA fSAMPLE = 12.5kHz 2.5 ✻ µA DCLK Static 0.001 3 ✻✻ µA DIGITAL INPUT/OUTPUT Logic Family CMOS ✻ Logic Levels VIH | IIH | ≤ +5µA 3.0 5.5 ✻✻ V VIL | IIL | ≤ +5µA –0.3 +0.8 ✻✻ V VOH IOH = –250µA 3.5 ✻ V VOL IOL = 250µA 0.4 ✻ V Data Format Straight Binary ✻ POWER-SUPPLY REQUIREMENTS +VCC Specified Performance 4.75 5.25 ✻✻ V Quiescent Current 1.5 2.0 ✻ mA fSAMPLE = 100kHz 300 ✻ µA Power-Down Mode(3), CS = +VCC 3 ✻ µA Power Dissipation 7.5 10 ✻ mW TEMPERATURE RANGE Specified Performance –40 +85 ✻✻ °C ✻ Same specifications as ADS8344E, N. NOTES: (1) LSB means Least Significant Bit. With VREF equal to +5.0V, one LSB is 76µV. (2) First nine harmonics of the test frequency. (3) Auto power-down mode (PD1 = PD0 = 0) active or SHDN = GND. |
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